Overview
The AD8220WARMZ-RL, produced by Analog Devices Inc., is a high-performance, single-supply JFET input instrumentation amplifier. It is designed to meet the needs of portable instrumentation and mixed-signal processing systems. This amplifier is notable for its high common-mode rejection ratio (CMRR), low power consumption, and rail-to-rail output stage, making it ideal for applications requiring high accuracy and low noise.
The AD8220 is available in an 8-MSOP package, which is compact and suitable for space-constrained designs. It can operate on a single supply voltage ranging from 4.5 V to 36 V or on a dual supply voltage from ±2.25 V to ±18 V, enhancing its versatility in various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (Single/Dual) | 4.5 V / ±2.25 V | 36 V / ±18 V | V | |
| Common-Mode Rejection Ratio (CMRR) | 86 dB (G = 1) | 80 dB (G = 1 at 5 kHz) | dB | |
| Input Bias Current | 10 pA | 25 pA | pA | |
| Input Offset Current | 0.6 pA | 2 pA | pA | |
| Bandwidth (-3 dB) | 1.5 MHz (G = 1) | 14 kHz (G = 1000) | kHz | |
| Slew Rate | 2 V/μs | V/μs | ||
| Quiescent Supply Current | 750 μA | μA | ||
| Operating Temperature | -40°C | 125°C | °C | |
| Package Type | 8-MSOP |
Key Features
- High CMRR: Minimum CMRR of 86 dB at dc and 80 dB at 5 kHz for G = 1.
- Low Power Consumption: Maximum quiescent supply current of 750 μA, making it suitable for battery-powered devices.
- Rail-to-Rail Output: Maximizes dynamic range on low voltage supplies, ideal for portable applications.
- Single Resistor Gain Setting: Gain can be set from 1 to 1000 with a single resistor.
- Low Input Bias Current: Maximum input bias current of 10 pA, typically below 300 pA over the industrial temperature range.
- Reference Pin for Output Offset: Allows the user to offset the output voltage, useful for interfacing with analog-to-digital converters.
- Compact Package: Available in an 8-MSOP package, taking roughly half the board area of an SOIC.
- ESD Protection: 4 kV ESD protection.
Applications
- Medical Instrumentation: Suitable for high-accuracy medical devices.
- Precision Data Acquisition: Ideal for systems requiring precise signal amplification and conditioning.
- Transducer Interfaces: Used to amplify signals from various transducers in industrial and medical applications.
- Automotive Applications: Qualified for automotive use with an operating temperature range of -40°C to 125°C.
- Defense and Aerospace Applications: The AD8220-EP version supports defense and aerospace applications with enhanced reliability and qualification data.
Q & A
- What is the typical input bias current of the AD8220?
The typical input bias current of the AD8220 is 10 pA, and it typically remains below 300 pA over the entire industrial temperature range.
- What is the bandwidth of the AD8220 at a gain of 1?
The bandwidth of the AD8220 at a gain of 1 is 1.5 MHz.
- Can the AD8220 operate on a single supply voltage?
Yes, the AD8220 can operate on a single supply voltage ranging from 4.5 V to 36 V, as well as on a dual supply voltage from ±2.25 V to ±18 V.
- What is the slew rate of the AD8220?
The slew rate of the AD8220 is 2 V/μs.
- What is the quiescent supply current of the AD8220?
The maximum quiescent supply current of the AD8220 is 750 μA.
- How is the gain set in the AD8220?
The gain in the AD8220 can be set from 1 to 1000 using a single resistor.
- What is the operating temperature range of the AD8220WARMZ-RL?
The operating temperature range of the AD8220WARMZ-RL is -40°C to 125°C, making it suitable for automotive applications).
- Does the AD8220 have ESD protection?
Yes, the AD8220 has 4 kV ESD protection).
- What package types are available for the AD8220?
The AD8220 is available in an 8-MSOP package).
- Is the AD8220 suitable for medical instrumentation?
Yes, the AD8220 is suitable for medical instrumentation due to its high accuracy and low noise characteristics).
